CVE-2026-0421 json
A potential vulnerability was reported in the BIOS of L13 Gen 6, L13 Gen 6 2-in-1, L14 Gen 6, and L16 Gen 2 ThinkPads which could result in…
published 9mo ago modified 4mo ago also EUVD-2026-2664
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 5%
- public exploits
- 0
- none known
Summary
A potential vulnerability was reported in the BIOS of L13 Gen 6, L13 Gen 6 2-in-1, L14 Gen 6, and L16 Gen 2 ThinkPads which could result in Secure Boot being disabled even when configured as “On” in the BIOS setup menu. This issue only affects systems where Secure Boot is set to User Mode.
Patch / fix
- Lenovo ThinkPad L13 Gen 6 BIOS 1.10
- Lenovo ThinkPad L13 Gen 6 2 in 1 BIOS 1.10
- Lenovo ThinkPad L14 Gen 6 BIOS 1.06
- Lenovo ThinkPad L16 Gen 2 BIOS 1.06
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 9mo ago
Exploit prediction
0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.0 | CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 7.0 | CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- Lenovo ThinkPad L13 Gen 6 BIOS
- Lenovo ThinkPad L13 Gen 6 2 in 1 BIOS
- Lenovo ThinkPad L14 Gen 6 BIOS
- Lenovo ThinkPad L16 Gen 2 BIOS
Classification
- Weakness
-
- CWE-252 Unchecked Return Value
References
Sources
- CVE List CVE-2026-0421
- NVD CVE-2026-0421
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